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PCM3070RHBEVM-K: PCM3070 switch digital input to analog input

Piotr Kuzior
Prodigy 20 points
Part Number: PCM3070RHBEVM-K

Hello!

I have PCM3070RHBEVM and in PCM3070-K CS I am starting Equalizers script, all is ok, signal input from the usb and goes out through the headphone output. I have trouble switching the digital input signal to analog IN1.

My registers:

  • 0
    TI__Guru 57800 points

    Hi, Piotr,

    Welcome to E2E, Thanks for your interest in our products!.

    Digital input signal and analog IN1 are both inputs to the device, depending on the desired output the switching capabilities between them changes. Could you please provide more details about the configuration you are trying to achieve?.

    Thanks and Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer

  • 0 in reply to Diego Melendez
    Prodigy 20 points
    Hello Diego,

    I need use:
    IN1->Left ADC ->miniDSP-> Left DAC-> LOL
    |
    -->Right ADC->miniDSP -> Right DAC-> LOR

    Now i have:

    USB audio->miniDSP-> Left DAC-> LOL
    |
    ----------->miniDSP -> Right DAC-> LOR

    I can not switch the usb audio input to analog in1. I turn on the adc and nothing.
  • 0 in reply to Piotr Kuzior
    TI__Guru 57800 points

    Hi, Piotr,

    If the processing you need is just fixed (with any of the process blocks available), you can just configure the device to make an ADC/DAC loopback by setting bit D4 of Page 0 / Register 29 as '1'.

    You need to configure the miniDSP of the device by using PurePath Studio if custom process flow is required, there, you must use an inter-processor block to transfer the signal from miniDSP_A to miniDSP_D. 

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer